Descaling agent injection structure for a reactor

Abstract

The present invention discloses a descaling agent injection structure for a reactor, comprising a reactor body, a hollow shaft, a driving mechanism, a pressurized conveying assembly, a circumferential dispersion member, and a propulsion-type stirring paddle. An injection port is provided at the top of the reactor body for injecting descaling agent from the top. the hollow shaft is rotatably connected to the reactor body. the output end of the driving mechanism is transmission-connected to the hollow shaft for driving the hollow shaft to rotate. the output end of the pressurized conveying assembly is connected to the top of the hollow shaft through a rotary joint. The present invention injects and diffuses the descaling agent at the bottom of the reactor body through the circumferential dispersion member, cooperates with the propulsion-type stirring paddle, and forms a descaling agent injection method of rapid turbulent mixing from bottom to top. Moreover, the descaling agent injection port at the top of the reactor body can simultaneously add the descaling agent from above, cooperates to realize the descaling agent injection from bottom to top, forms an infiltration mode of up and down convection, and promotes the mutual infiltration and mixing of the descaling agent and the ore slurry in the reactor body.

Description

[0001] Description

[0002] DESCALING AGENT INJECTION STRUCTURE FOR A REACTOR

[0003] FIELD OF THE DISCLOSURE

[0004] The invention relates to the technical field of laterite nickel ore hydrometallurgy, and in particular to a reactor descaling agent inj ection structure .

[0005] BACKGROUND

[0006] At present , in the laterite nickel ore hydrometallurgy method, ore pulp, sul furic acid and steam are usually inj ected into a high- pressure reactor for smelting to leach nickel and cobalt in the laterite nickel ore . This process will also produce precipitation from the hydrolysis of Fe3+and Al3+metal ions , forming scale on the inner wall of the reactor, and scaling is generally inhibited by adding a descaling agent . The descaling agent filling port of the existing reactor is generally set at the top of the reactor body, and the descaling agent is added to the inside of the reactor body through the filling port located at the top, and then di f fused to various positions of the reactor body under the action of the stirring device inside the reactor body . Some reactors are also provided with a descaling structure , such as the Chinese patent with application number CN201520928068 . 6 , a reactor with a descaling function, the upper part of the hollow screw is connected to a liquid inlet device , the lower part of the hollow screw is provided with a hollow stirrer, the upper part and both sides of the hollow stirrer are respectively provided with a spray hole and a brush, and the descaling agent is sprayed out through the spray hole to cooperate with the brush to clean the scale .

[0007] The above-mentioned prior art still has the following problems : the active cleaning structure will interfere with the normal working process of the reactor . Therefore , in order to maintain the continuous operation of the reactor, the descaling agent is generally added from the top . However, this inj ection method causes the descaling agent to take a long time to reach the bottom of the reactor, which has an adverse ef fect on the descaling ef fect of the reactor .

[0008] SUMMARY

[0009] The purpose of the present invention is to overcome the above technical deficiencies and propose a descaling agent inj ection structure for a reactor to solve the technical problem in the prior art that inj ecting descaling agent from the top filling port of the reactor body has an adverse ef fect on the descaling ef fect of the reactor body .

[0010] In order to achieve the above technical obj ectives , the present invention adopts the following technical solutions . The present invention provides a reactor descaling agent inj ection structure , comprising : The reactor body is provided with an inj ection port at the top for inj ecting a descaling agent from the top Hollow shaft body, which is rotatably connected to the reactor body Driving mechanism, the output end of which is drivingly connected to the hollow shaft body, and is used to drive the hollow shaft body to rotate Pressuri zed delivery component , the output end of which is connected to the top end of the hollow shaft through a rotary j oint , and is used for pressuri zing and introducing the descaling agent into the interior of the hollow shaft C ircumf erential dispersion member, which is arranged on the hollow shaft body and is used to disperse the descaling agent introduced into the hollow shaft body circumferentially and guide it out from the bottom of the reactor body The propulsion stirring paddle is arranged on the hollow shaft body and is used to push the fluid flow upward from the bottom of the kettle body .

[0011] In some embodiments , the circumferential dispersion member includes a containing tube , which is coaxially arranged on the hollow shaft body and communicated with the interior of the hollow shaft body . A plurality of outlet holes is opened on the outer side of the containing tube in a circumferentially distributed manner . In some embodiments , the plurality of outlet holes is divided into multiple layers from top to bottom, with two layers forming a group, and the upper and lower layers of holes in each group of outlet holes are relatively inclined .

[0012] In some embodiments , the inclination angle between the upper and lower layers of holes in each group of the lead-out holes is thirty degrees .

[0013] In some embodiments , the outer diameter of the accommodating tube is greater than the outer diameter of the hollow shaft body, and the top periphery and the bottom periphery of the accommodating tube are respectively provided with discharge holes inclined upward and downward .

[0014] In some embodiments , the number of the accommodating cylinders is two , and the two accommodating cylinders are respectively located above and below the propulsion stirring paddle .

[0015] In some embodiments , a branch tube is provided on the inner side of the hollow shaft body, the top end of the branch tube is connected to the inside of the hollow shaft body, and the bottom end of the branch tube passes through the upper accommodating cylinder and extends into the lower accommodating cylinder for branching and inj ecting the descaling agent .

[0016] In some embodiments , the cross-sectional area of the branch pipe is hal f the cross-sectional area of the hollow shaft body .

[0017] In some embodiments , the driving mechanism includes a driving motor and a gear set , the output shaft of the driving motor is connected to the input end of the gear set , and the output end of the gear set is an output gear that is fixedly mounted on the outside of the hollow shaft body .

[0018] In some embodiments , the boost delivery assembly includes a boost pump and a descaling agent liquid tank, the liquid inlet end of the boost pump is connected to the descaling agent liquid tank through a pipeline , and the liquid outlet end of the boost pump is connected to the rotary j oint through a pipeline .

[0019] Compared with the prior art , the descaling agent inj ection structure of the reactor provided by the present invention has a descaling agent channel formed inside the hollow shaft body, and the descaling agent is inj ected at the bottom of the reactor body through the circumferential dispersion piece and di f fused around, and cooperates with the propulsion stirring paddle to form a descaling agent inj ection with rapid turbulent mixing from bottom to top, and the descaling agent inj ection port on the top of the reactor body can simultaneously add descaling agent from above , and cooperate with the descaling agent inj ection from bottom to top to form an up-and-down convection penetration mode , which promotes the mutual penetration and mixing of the descaling agent and the slurry in the reactor body, so as to increase the speed of descaling and scaling inhibition reaction .

[0020] BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG . 1 is a schematic structural diagram of a descaling agent inj ection structure for a reactor provided in an embodiment of the present invention .

[0022] FIG . 2 is a partial enlarged view of the A portion of FIGI of the present invention .

[0023] FIG . 3 is schematic structural diagram of a descaling agent inj ection structure for a reactor provided by another embodiment of the present invention .

[0024] FIG . 4 is three-dimensional structural diagram of a reactor descaling agent inj ection structure provided by another embodiment of the present invention .

[0025] Description of reference numerals :

[0026] 1 . Reactor body 31 . Driving motor 53 . Discharge hole .

[0027] 2 . Hollow shaft . 32 . Gear set 101 . Inlet .

[0028] 3 . Driving mechanism 41 . Booster pump 201 . Branch pipe

[0029] 4 . Booster delivery 42 . Descaling agent 301 . Output assembly liquid tank gear

[0030] 5 . Circumferential 51 . Accommodation 401 . Rotary dispersion member cylinder oint

[0031] 6 . Propeller 52 . Lead-out hole stirring paddle DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In order to solve the technical problem that injecting a descaling agent from the top filling port of the kettle body has an adverse effect on the descaling effect of the kettle body , the present invention provides a reactor descaling agent injection structure, which can realize an up and down convection descaling agent penetration mode, promote the mutual penetration and mixing of the descaling agent and the slurry in the kettle body, so as to increase the speed of the descaling and scaling inhibition reaction .

[0034] It should be noted that the reactor descaling agent injection structure described in the present invention is used for but not limited to laterite nickel ore hydrometallurgy. For the convenience of explanation, in the present invention, only the use of the reactor descaling agent injection structure in the reactor in laterite nickel ore hydrometallurgy is used as an example for explanation, and the principle of applying the reactor descaling agent injection structure to other production purposes is essentially the same as the principle applied to laterite nickel ore hydrometallurgy, which will not be described one by one here.

[0035] Refer to FIG. 1, which is a schematic diagram of the structure of the descaling agent injection structure for a reactor in one embodiment of the present invention. The descaling agent injection structure for a reactor includes a reactor body (1) , a hollow shaft body (2) , a driving mechanism (3) , a pressurized conveying assembly (4) , a circumferential dispersion member (5) , and a propulsion stirring paddle (6) . An injection port (101) is provided on the top of the reactor body (1) for injecting the descaling agent from the top and gradually penetrating from top to bottom. The hollow shaft body (2) is rotatably connected to the reactor body (1) , and the interior of the hollow shaft body (2) is hollow, so that the descaling agent can flow to the bottom of the reactor body, the output end of the driving mechanism (3) is transmission-connected to the hollow shaft body (2) , and is used to drive the hollow shaft body (2) to rotate, thereby ensuring the basic function of the hollow shaft body (2) as the stirring shaft of the reactor, and providing the circumferential dispersion member (5) with centrifugal force for the circumferential dispersion of the descaling agent, the output end of the pressurized conveying assembly (4) is connected to the top end of the hollow shaft body (2) through the rotary joint (401) . The device is used for pressurizing and introducing the descaling agent into the interior of the hollow shaft body (2) , provides sufficient pressure by means of pressurization and provides sufficient extrusion force. The result the descaling agent can be dispersed farther around from the circumferential dispersion member (5) . the circumferential dispersion member (5) is arranged on the hollow shaft body (2) , and is used for dispersing the descaling agent introduced into the interior of the hollow shaft body (2) circumferentially at the bottom of the reactor body (1) . The propulsion stirring paddle (6) is arranged on the hollow shaft body (2) , and is used for pushing the fluid flow upward from the bottom of the reactor body, so as to cause the descaling agent discharged from the circumferential dispersion member (5) to flow upward along with the fluid in the reactor body.

[0036] In this embodiment, a descaling agent channel is formed inside the hollow shaft, and the descaling agent is injected at the bottom of the kettle body and diffused around through the circumferential dispersion member (5) , and cooperates with the propulsion stirring paddle (6) to form a descaling agent injection method with rapid turbulent mixing from bottom to top. In addition, the descaling agent injection port (101) on the top of the kettle body can simultaneously add descaling agent from above, and cooperate to realize the injection of the descaling agent from bottom to top, forming an infiltration mode of top and bottom convection, promoting the mutual penetration and mixing of the descaling agent and the slurry in the kettle body, so as to increase the speed of descaling and scaling inhibition reaction. Furthermore, in order to drive the top of the hollow shaft body (2) to rotate without obstruction, please refer to FIG. 1. The driving mechanism (3) includes a driving motor (31) and a gear set (32) . The output shaft of the driving motor (31) is connected to the input end of the gear set (32) , and the gear set (32) is used for transmission. The output end of the gear set (32) is an output gear (301) that is fixed on the outside of the hollow shaft body (2) . The gear set (32) can adopt a reduction gear set. Under the meshing of multiple gears, a transmission gear is connected to the final output shaft, and the transmission gear is meshed with the output gear (301) .

[0037] It can be understood that the driving motor (31) outputs torque, and under the transmission of the gear set (32) , drives the output gear (301) to rotate, and the output gear (301) drives the hollow shaft body (2) to rotate, thereby achieving the driving purpose.

[0038] Furthermore, in order to facilitate the hollow shaft body (2) to stably introduce the descaling agent therein into the bottom end of the reactor body (1) , Refer to Figure 1, the booster delivery component (4) includes a booster pump (41) and a descaling agent liquid tank (42) , the liquid inlet end of the booster pump (41) is connected to the descaling agent liquid tank (42) through a pipeline, and the liquid outlet end of the booster pump (41) is connected to the rotary joint (401) through a pipeline. Under the action of the booster pump (41) , the descaling agent is pressurized and introduced into the hollow shaft body ( 2) through the rotary joint (401) , so that the descaling agent has sufficient pressure and is discharged downward from the circumferential dispersion part (5) at the bottom of the hollow shaft body (2) .

[0039] In one embodiment, please refer to FIG. 2, the circumferential dispersion member (5) includes a accommodating tube (51) , which is coaxially arranged on the hollow shaft body (2) and communicated with the interior of the hollow shaft body (2) . The accommodating tube (51) is circular, with a sealed bottom and an open top, and the opening is communicated with the interior of the hollow shaft body (2) . Plurality of outlet holes (52) are circumferentially distributed on the outer side of the accommodating tube (51) .

[0040] In this embodiment, the outlet hole (52) can be arranged horizontally, and the rotation of the hollow shaft 2 can drive the entire accommodating cylinder (51) . to rotate, and the descaling agent can be thrown out from the outlet hole (52) in all directions In one of the embodiments, please refer to FIG. 2, in order to achieve a turbulent mixing effect when the descaling agent is discharged circumferentially, the plurality of the outlet holes (52) are divided into multiple layers from top to bottom, with two layers forming a group, and the upper and lower layers of holes in each group of outlet holes (52) are relatively inclined, that is, the upper holes in the two layers of holes outlet the descaling agent obliquely downward, and the lower holes outlet the descaling agent obliquely upward. Therefore, the descaling agent discharged from the upper and lower layers of the outlet holes in each group of outlet holes (52) will collide with each other in the fluid, forming turbulence, and the turbulent fluid between the upper and lower groups will further turbulent, thereby forming a multi-stage turbulent effect that gradually diffuses from the inside to the outside .

[0041] Optionally, the inclined angle of the upper and lower layers of holes in each group of the outlet holes (52) is thirty degrees, so that it has a certain diffusion distance and can form collision and turbulence. It should be noted that the inclined angle in this embodiment refers to the angle between the outlet hole (52) and the horizontal plane is 30°, in other words, the angle between the outlet hole (52) and the central axis of the hollow shaft body (2) is 60°.

[0042] In one of the embodiments, please refer to FIG. 2, in order to increase the diffusion area of the descaling agent in the circumferential dispersion member (5) , the outer diameter of the accommodating tube (51) is larger than the outer diameter of the hollow shaft body (2) , and the top periphery and the bottom periphery of the accommodating tube (51) are respectively provided with discharge holes (53) with upward and downward inclinations, so that the descaling agent can diffuse toward the upper and lower sides during the circumferential dispersion process, effectively increasing the diffusion area of the descaling agent.

[0043] In one of the embodiments, please refer to FIGs. 3 and 4. In order to facilitate the descaling agent to be more fully injected from the bottom of the kettle body to achieve the purpose of its rapid distribution at the bottom of the kettle body, the accommodating cylinder (51) in this embodiment can be set to two, and the two accommodating cylinders (51) are respectively located above and below the propulsion stirring paddle (6) . During the injection process of the descaling agent, the accommodating cylinders (51) distributed up and down can directly cover the upper and lower areas, and then move upward along the axial direction under the stirring of the propulsion stirring paddle (6) to form a cycle.

[0044] Furthermore, in order to promote uniform distribution of the descaling agent in multiple accommodating cylinders (51) , a branch pipe (201) is provided on the inner side of the hollow shaft body (2) , and the top end of the branch pipe (201) is connected to the interior of the hollow shaft body (2) . When the descaling agent is introduced into the hollow shaft body (2) , it will also enter the branch pipe (201) . The bottom end of the branch pipe (201) passes through the upper accommodating cylinder (51) and extends to the lower accommodating cylinder (51) , connecting the two accommodating cylinders (51) , and is used to divert the descaling agent and inject it into the lower accommodating cylinder (51) .

[0045] Furthermore, in order to evenly introduce the descaling agent, the cross-sectional area of the branch pipe (201) is half of the cross-sectional area of the hollow shaft 2, thereby evenly branching and diverting the descaling agent.

[0046] It can be understood that there can be multiple accommodating cylinders (51) , which are distributed in sequence from top to bottom along the hollow shaft body (2) . A plurality of branch pipes (201) is arranged inside the hollow shaft body (2) , and the plurality of branch pipes (201) are respectively connected to each accommodating cylinder (51) . Under this structural setting, a propulsion stirring paddle (6) is not required, and the descaling agent can be quickly dispersed in the kettle body, and the dispersion is more uniform and rapid.

[0047] In order to better understand the present invention, the technical solution of the present invention is described in detail below in conjunction with FIGs. 1 to 4 : Based on the normal working process of the reactor body (1) , the descaling agent is injected from top to bottom through the injection port (101) . In addition, the descaling agent in the descaling agent liquid tank (42) is introduced into the hollow shaft body (2) through the rotary joint (401) through the booster pump (41) in the booster delivery component (4) . When there is only one accommodating cylinder (51) , under the rotation drive of the driving mechanism (3) on the hollow shaft body (2) , the descaling agent is discharged from the outlet hole (52) on the accommodating cylinder (51) , forming a circumferential dispersion, and under the axial propulsion of the propulsion stirring paddle (6) , the descaling agent is formed. Form a fluid flow from bottom to top. when the number of accommodating cylinders (51) is two, the branch pipe (201) is used to branch and guide the descaling agent, and it is evenly introduced into the two accommodating cylinders (51) , and the descaling agent is respectively discharged above and below the propulsion stirring paddle (6) , and the bottom of the kettle body is quickly covered, and under the axial propulsion of the propulsion stirring paddle (6) , a fluid flow from bottom to top is formed, the descaling agent is injected from bottom to top, and the descaling agent is added from top to bottom at the injection port (101) , forming an up-and-down convection penetration mode, promoting the mutual penetration and mixing of the descaling agent and the slurry in the kettle body, so as to increase the speed of the descaling and scaling inhibition reaction.

[0048] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

WHAT IS CLAIMED IS1 . Reactor descaling agent inj ection structure , characteri zed by comprising : The reactor body is provided with an inj ection port at the top for inj ecting a descaling agent from the top . Hollow shaft body, which is rotatably connected to the reactor body . riving mechanism, the output end of which is drivingly connected to the hollow shaft body, and is used to drive the hollow shaft body to rotate . Pressuri zed delivery component , the output end of which is connected to the top end of the hollow shaft through a rotary j oint , and is used for pressuri zing and introducing the descaling agent into the interior of the hollow shaft . Circumferential dispersion member, which is arranged on the hollow shaft body and is used to disperse the descaling agent introduced into the hollow shaft body circumferentially and guide it out from the bottom of the reactor body . The propulsion stirring paddle is arranged on the hollow shaft body and is used to push the fluid flow upward from the bottom of the kettle body .2 . The reactor descaling agent inj ection structure according to claim 1 is characteri zed in that the circumferential dispersion member includes a containing tube , which is coaxially arranged on the hollow shaft body and communicated with the interior of the hollow shaft body, and a plurality of outlet holes are opened on the outer side of the containing tube in a circumferential distribution .3 . The reactor descaling agent inj ection structure according to claim 2 is characteri zed in that the plurality of outlet holes are divided into multiple layers from top to bottom, each two layers form a group, and the upper and lower layers of holes in each group of outlet holes are relatively inclined4 . The descaling agent inj ection structure for a reactor according to claim 3 , characteri zed in that the inclined angle between the upper and lower layers of holes in each group of the outlet holes is thirty degrees .5 . The reactor descaling agent inj ection structure according to claim 3 , characteri zed in that the outer diameter of the accommodating cylinder is larger than the outer diameter of the hollow shaft , and the top periphery and the bottom periphery of the accommodating cylinder are respectively provided with discharge holes inclined upward and downward .6 . The descaling agent inj ection structure for a reactor according to claim 5 , characteri zed in that there are two accommodating cylinders , which are respectively located above and below the propulsion stirring paddle .7 . The descaling agent inj ection structure for a reactor according to claim 6 is characteri zed in that a branch pipe is provided on the inner side of the hollow shaft body, the top end of the branch pipe is connected to the inside of the hollow shaft body, and the bottom end of the branch pipe passes through the upper accommodating cylinder and extends into the lower accommodating cylinder for branching the descaling agent inj ection .8 . The descaling agent inj ection structure for a reactor according to claim 7 , characteri zed in that the cross- sectional area of the branch pipe is hal f of the cross- sectional area of the hollow shaft .9 . The reactor descaling agent inj ection structure according to claim 1 , characteri zed in that the driving mechanism comprises a driving motor and a gear set , the output shaft of the driving motor is connected to the input end of the gear set , and the output end of the gear set is an output gear fixedly mounted on the outside of the hollow shaft .10 . The descaling agent inj ection structure for a reactor according to claim 1 is characteri zed in that the booster delivery assembly comprises a booster pump and a descaling agent liquid tank, the liquid inlet end of the booster pump is connected to the descaling agent liquid tank through a pipeline , and the liquid outlet end of the booster pump is connected to the rotary j oint through a pipeline .

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